A two-way adjustable hydraulic joint oil cylinder

Abstract

The invention relates to a two-way adjustable hydraulic joint oil cylinder. A cylinder middle sleeve is arranged in the cylinder body. A front adjustment sleeve is covered on the front part of the oil cylinder middle sleeve, and a rear adjustment sleeve is covered on the rear part of the oil cylinder middle sleeve. There is an oil flow gap between the body and the middle sleeve of the oil cylinder, the front adjustment sleeve, and the rear adjustment sleeve. The front part of the middle sleeve of the oil cylinder is provided with a front throttle hole for adjusting oil flow damping, and the rear part of the middle sleeve of the oil cylinder is provided with a The rear throttle hole is used to adjust the oil flow damping; the front adjustment sleeve is provided with a front adjustment hole corresponding to the front throttle hole, and the rear adjustment sleeve is provided with a rear adjustment hole corresponding to the rear throttle hole. The beneficial effect of the present invention is that: the inside of the oil cylinder adopts an orifice array structure, adopts a hierarchical adjustment method, effectively controls the damping adjustment gradient of the hydraulic joint oil cylinder in the high damping stage, and improves the linearity of the hydraulic joint oil cylinder damping adjustment in the middle and low damping stages The degree of adjustment of the hydraulic prosthetic knee joint is higher, the operation is more convenient, the user experience is more comfortable, and the use effect is better.

Description

technical field [0001] The invention belongs to a knee joint prosthetic device, in particular to a two-way adjustable hydraulic joint oil cylinder. Background technique [0002] Prosthetic knee joints, as a device to help disabled people regain their mobility, are crucial to improving the quality of life of disabled people and helping them regain their self-confidence. The hydraulic prosthetic knee joint occupies a very important position in many types of prosthetic knee joints. Its core component is the hydraulic joint cylinder. The hydraulic joint cylinder controls the swing speed of the joint through the adjustment of two-way damping. Its damping adjustment performance directly determines the knee joint. The stability of joint movement affects the effect of prosthetics. Existing hydraulic oil cylinder adjustment devices generally have the problem that the rate of change of the adjustment amount is too large, that is, a small amount of adjustment operation will produce a ...

AI Technical Summary

Problems solved by technology

Existing hydraulic oil cylinder adjustment devices generally have the problem that the rate of change of the adjustment amount is too large, that is, a small amount of adjustment operation will produce a large amount of change in the speed of the hydraulic joint, which is difficult to adjust and has poor linearity, especially at higher The problem is particularly prominent when adjusting the damping interval

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